The Lenovo ThinkSystem NetXtreme PCIe 1Gb 2-Port RJ45 Ethernet Adapter is a network adapter designed for use in Lenovo ThinkSystem servers. It features two 1Gb RJ45 Ethernet ports, allowing for connections to multiple Ethernet devices. This adapter is compatible with PCIe 2.0 x1 slots and offers fast and reliable data transfer rates for networking applications. It is an efficient solution for connecting servers to Ethernet networks.